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    METHOD OF GNB-DU APPARATUS, METHOD OF UE AND GNB-DU APPARATUS
    1.
    发明公开
    METHOD OF GNB-DU APPARATUS, METHOD OF UE AND GNB-DU APPARATUS 审中-公开

    公开(公告)号：US20240365432A1

    公开(公告)日：2024-10-31

    申请号：US18684243

    申请日：2022-07-27

    Applicant: NEC Corporation

    Inventor： Toshiyuki TAMURA ,  Iskren IANEV ,  Kundan TIWARI

    IPC: H04W76/30 ,  H04W76/19 ,  H04W76/20

    CPC classification number: H04W76/30 ,  H04W76/19 ,  H04W76/20

    Abstract: This disclosure proposes solutions for providing a resiliency of gNB-CU against possible node failures. The node failure includes unexpected system reset, system rebooting, system stall, system congestion and communication failure with neighboring nodes.
    A method of a gNB Distributed Unit (gNB-DU) apparatus includes detecting failure of a gNB Centralized Unit User Plane (gNB-CU-UP) apparatus. The method includes sending a UE COTEXT RELEASE REQUEST message to a gNB Centralized Unit Control Plane (gNB-CU-CP) apparatus in a case of detecting the failure of the gNB-CU-UP apparatus. The UE COTEXT RELEASE REQUEST message includes information indicating detection of the failure of the gNB-CU-UP apparatus and information indicating that Radio Resource control (RRC) connection with a User Equipment (UE) needs to be re-established. The method includes receiving a UE CONTEXT RELEASE COMMAND message from the gNB-CU-CP apparatus. The method includes sending a RRC Release message to the UE.

    METHOD FOR SYNCHRONIZATION OF HOME NETWORK KEY
    4.
    发明申请
    METHOD FOR SYNCHRONIZATION OF HOME NETWORK KEY 有权

    公开(公告)号：US20220141661A1

    公开(公告)日：2022-05-05

    申请号：US17434505

    申请日：2020-02-28

    Applicant: NEC Corporation

    Inventor： Sander DE KIEVIT ,  Kundan TIWARI

    IPC: H04W12/069 ,  H04W12/041

    Abstract: The present disclosure provides a terminal including a memory; and a processor, comprising hardware, configured to perform a primary authentication between the terminal and a network in 5G for a third party service, derive a security key, KAUSF, and derive an identifier for the security key from the security key.

    METHOD OF USER EQUIPMENT (UE), METHOD OF COMMUNICATION APPARATUS, AND UE
    6.
    发明申请
    METHOD OF USER EQUIPMENT (UE), METHOD OF COMMUNICATION APPARATUS, AND UE 有权

    公开(公告)号：US20250071668A1

    公开(公告)日：2025-02-27

    申请号：US18710706

    申请日：2022-12-07

    Applicant: NEC Corporation

    Inventor： Kundan TIWARI ,  Toshiyuki TAMURA ,  Iskren IANEV

    IPC: H04W48/18 ,  H04W36/08 ,  H04W60/04 ,  H04W64/00

    Abstract: There is a service requirement defined in 3GPP TS 22.261. However, there is no clear mechanism defined in 3GPP specifications how the requirement can be realized. A method of a User Equipment (UE) includes sending first information indicating a first network slice which is available in a first network where the UE is located and second information indicating a second network slice which is required by a service or an application activated in the UE and is not available on the first network. The method includes receiving third information indicating a second network where the second network slice is available.

    UE BEHAVIOR WHEN THE DEVICE IS ATTACHED FOR EMERGENCY SERVICE
    8.
    发明申请
    UE BEHAVIOR WHEN THE DEVICE IS ATTACHED FOR EMERGENCY SERVICE 有权

    公开(公告)号：US20230088590A1

    公开(公告)日：2023-03-23

    申请号：US17994666

    申请日：2022-11-28

    Applicant: NEC Corporation

    Inventor： Kundan TIWARI ,  Toshiyuki Tamura

    IPC: H04W4/90 ,  H04W60/04

    Abstract: This disclosure is related to a procedure of handling UE (100) behavior when the UE (100)is attached for emergency services. More specifically this disclosure defines the UE (100) behavior when the UE (100) is registered to a PLMN or two different PLMN via 3GPP access network and non-3GPP access network and UE (100) has is registered for emergency service over one of the 3GPP access network or non-3GPP access network.

    A UE BEHAVIOR IN AN ALLOWED AREA OR A NON-ALLOWED AREA
    9.
    发明申请
    A UE BEHAVIOR IN AN ALLOWED AREA OR A NON-ALLOWED AREA 有权

    公开(公告)号：US20210314849A1

    公开(公告)日：2021-10-07

    申请号：US17266733

    申请日：2019-08-07

    Applicant: NEC Corporation

    Inventor： Kundan TIWARI ,  Toshiyuki TAMURA ,  Linghang FAN

    IPC: H04W48/04 ,  H04W60/00 ,  H04W36/32

    Abstract: A method for a User Equipment (UE) (500) comprises performing registration procedure to 5G System (5GS); receiving at least one of area restriction related information indicating at least one of allowed area and not allowed area, wherein the area restriction related information is at least one of per Single Network Slice Selection Assistance Information (S-NSSAI) basis, per Access Point Name (APN) basis, and per S-NSSAI and APN basis; and determining whether or not to transmit a Protocol Data Unit (PDU) session related signaling based on the area information; wherein the UE (500) transmits the PDU session related signaling when the UE (500) enters Tracking Area (TA) present in the allowed area or when the UE (500) does not enter TA present in the not allowed area.

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